Keegan Bradley has been able to incorporate changes into his swing without losing the fearlessness that he once displayed on the ski slopes. See a frame-by-frame look at his swing with analysis by Jim McLean.

A Work In Progress: Watch a video progression of Tiger's swing from four stages of his career -- the early 1990s to the present (2011). See how his technique has changed with the influence of his different teachers: Rudy Duran, John Anselmo, Butch Harmon, Hank Haney and Sean Foley.

Watching K.J. Choi step to his ball is like watching a tank settle into position. The turf seems to give beneath his broad, squat legs as if they were cast from a material denser than flesh. See a frame-by-frame look at his swing with analysis by his coach Steve Bann.

Jason Day has played in nearly 100 PGA Tour events, tied for second in the Masters and finished second alone in the U.S. Open. See a frame-by-frame look at his swing with analysis by his longtime instructor Colin Swatton.